notes = {"C": 0,
         "C#": 1, "Db": 1, "D-": 1,
         "D": 2,
         "D#": 3, "Eb": 3, "E-": 3,
         "E": 4,
         "F": 5,
         "F#": 6, "Gb": 6, "G-": 6,
         "G": 7,
         "G#": 8, "Ab": 8, "A-": 8,
         "A": 9,
         "A#": 10, "Bb": 10, "B-": 10,
         "B": 11}